params which identify the element
if layer not found, if form not found, or form is not an attribute form
// returns element form data for layer id=3, form id=2, and element id=245
JMap.Form
 .getElement({
   layerId: 3,
   formId: 2,
   elementId: 245
 })
 .then(element => console.log("Element:", element))
 .catch(error => console.error("An error occurred when getting element data", error))
JMap.Form.getElement
Returns form data of an element from given parameters.
Works only for attribute forms.